UBM-GMM用于声纹识别

语音中的特征提取，源码来自github，不要用于商业用途，仅供学习。

function m = CDFInverse2（ p）



if sum（（p <= 0.0） + （p >= 1.0）） ~= 0
fprintf（‘Invalid input! input should be between 0 and 1\n‘）;
end

sl = find（p<0.5）;
sg = find（p>=0.5）;

p（sl） = sqrt（-2*log（p（sl）））;
p（sg） = sqrt（-2*log（1-p（sg）））; 

m = RationalApproximation（p）;
m（sl） = m（sl）.*-1;
%ml = -1*RationalApproximation（ sqrt（-2.0*log（p（sl））） ）;
%mg =  RationalApproximation（ sqrt（-2.0*log（1-p（sg））） ）;



%%%%%%%%%%%%%%%%%%%%
function u =  RationalApproximation（ t）

% The absolute value of the error should be less than 4.5 e-4.

t2 = t.^2;
o = ones（1length（t））; 

 c = [2.515517 0.802853 0.010328];
 d = [1.432788 0.189269 0.001308];
u = t - （（c（3）*t2 + c（2）*t） + c（1）*o） ./ （d（3）*（t2.*t） + d（2）*t2 + d（1）*t + o）;

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2017-03-18 08:43  Automatic-Language-Recognition-master\
     目录           0  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\
     文件         721  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\CDFInverse2.m
     文件        4264  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\Compute_DET.m
     文件        3535  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\EER_DET_conf.m
     文件        2609  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\GMM_SV_MAP.asv
     文件        2627  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\GMM_SV_MAP.m
     文件         629  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\Gen_SV_Test2.m
     文件        4484  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\LID_db_info.m
     文件         976  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\Min_DCF.m
     文件        1804  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\My_Det.asv
     文件        1803  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\My_Det.m
     文件        1010  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\ParamConfInter.m
     文件        3366  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\Plot_DET.m
     文件        5329  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\SVM_evaluate.asv
     文件        5326  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\SVM_evaluate.m
     文件         633  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\Set_DCF.m
     文件        1413  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\Set_DET_limits.m
     文件        4556  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\Train_GMM_SVM.asv
     文件        4548  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\Train_GMM_SVM.m
     文件       15364  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\_DS_Store
     文件         573  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\cout.m
     文件        4470  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\db_info.asv
     文件        4484  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\db_info.m
     文件         603  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\gaussian_function.m
     文件         895  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\gaussian_posteriors.m
     文件         430  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\m_norm.m
     文件       11342  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\monqp.m
     文件        6888  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\monqpCinfty.m
     文件         942  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\new_GMMkernel.m
     文件        3906  2017-03-18 08:43  Automatic-Language-Recognition-master\GMM-SVM\ppndf.m
............此处省略31个文件信息